We visited Bilger's Rocks near Curwensville, PA, home to an impressive rock city with mazes and narrow passageways. The rocks were huge and covered with moss and ferns, with some old growth hemlock trees. A beautiful place. There wasn't an extensive or well marked trail system, most people follow their own routes through the rocks. There were also some odd, if not cryptic, carvings in the rocks. Well worth the visit. Next stop was Cook Forest State Park...